Continuous rewinder for web material



Jan. 31, 1961 P. ZERNOV CONTINUOUS REWINDER FOR WEB MATERIAL Filed Sept. 22, 1958' 9 Sheets-Sheet 1 INVENTOR. /@7[ Zke/vm/ Jan. 31, 1961 P. ZERNOV CONTINUOUS REWINDER FOR was MATERIAL Filed Sept. 22, 1958 9 Sheets-Sheet 2 Pkrze ZfZA/OV 0277 -g@ IJTIWEIVEYS 9 Sheets-Sheet 5 P. ZERNOV CONTINUOUS REWINDER FOR WEB MATERIAL Jan. 31, 1961 Filed Sept. 22, 1958 Jan. 31, 1961 P. ZERNOV CONTINUOUS 'REWINDER FOR WEB MATERIAL 9 Sheets-Sheet 4 Filed Sept. 22, 1958 IIHIIIIIIH ll IHIIHIIHH II II II II llllllllll Jan. 3l, 1961 P. ZERNOV CONTINUOUS REWINDER FOR was MATERIAL 9 Sheets-Sheet 5 Filed Sept. 22, 1958 INVENTOR 57!? Zea/ml BY zefi zz'efly m I Alrraeym Jan. 31, 1961 Filed Sept. 22, 1958 P. ZERNOV CONTINUOUS REWINDER FOR WEB MATERIAL 9 Sheets-Sheet 6 INVENTOR.

57:2 Zqezmr Jan. 31, 1961 P. ZERNOV CONTINUOUS REWINDER FOR WEB MATERIAL Filed Sept. 22, 1958 9 Sheets-Sheet '7 l N VE NTOR Z zA m Q m\ y ,lrrazliyi Jan. 31, 1961 P, ZERNOV 2,969,930

CONTINUOUS REWINDER FOR was MATERIAL Filed Sept, 22 1958 9 Sheets-Sheet 8 W4 mid 752 79 L INVENTOR. 6 756 fiA/JV BY 919%, WW

line 11-1 '1 of Fig. 10;

United States Patent C ce CONTINUOUS REWINDER FOR WEB MATERIAL Peter Zernov, Milwaukee, Wis., assiguor to Mercury lingineeriug Corporation, Milwaukee, Wis., a corporation of Wisconsin FiledSept. 22, 1958, Set. No. 762,646

16 Claims. (Cl. 242-56) The invention relates to continuous rewinders for web material.

As in all rewinding mechanisms or apparatus, means are 'provided for changing the winding material from a completed roll to a fresh roll without'interruption in the supply or change of speed in the winding material being wound, the apparatus being capable of use for various web materials and in connection with various forms of material supply feeders. One object of the invention is to provide a continuous rewinder in which the web material supplied on the completion of one roll is cut from the oncoming web by a diagonal out which greatly simplifies the attachment of the severed web to a new mandrel .or its core and simplifies the construction of the machine. I

While as noted above the rewinder may receive its web material from any suitable source of tensioned material, another object of the invention is to provide a stock or web material tensioning mechanism that .may immediately precede the rewinder and act to control parts of the rewinder where such tensioning mechanism does not form a part of other material supply means.

The invention further consists in the several features hereinafter described and more particularly defined by claims at the conclusion hereof.

In the drawings:

Figs. 1 to 6 are diagrammatic views showing the general sequence of operations of a machine embodying the invention;

Fig. 7 is a side elevational view of a continuous rewinder embodying the invention shown associated with a tensioning material supply means;

Fig. 8 is a plan view illustrating the cut through the web;

Fig. 9 is a plan view ofthe apparatus shown in Fig. 7;

Fig. 10 is a vertical sectional view taken on the line 10-10 of Fig. 7 with the rolls in a vertical position, parts being broken away and parts being shown in section;

Fig. 11 is a detailed vertical sectional view taken on Fig. 12 is a detailed vertical sectional view taken on the line 1212 of Fig. 9;

Fig. 13 is a detailed vertical sectional view.taken on the line 1313 of Fig. 12.

Fig. 14 is a detailed vertical sectional view taken on the line :14-14 of Fig. 13;

Fig. '15 is a detailed horizontal sectional view taken on 2,969,939 Patented Jan. 31, 1961 and having web roll receiving rolls R1 and R2 rotatably' mounted in its end portions, said frame RF also having guide rolls GR mounted on opposite sides thereof adjacent the shaft S. Associated with the rolls R1 and R2. is a pressure roll PR mounted on a swinging frame SF pivoted on a shaft SS. TW represents the tensioned web.

Referring to Fig. 1, the squared or straight across end of the web TW is brought down over a guide roll G and adhesive secured to the roll R1. Each roll R1 or R2 may as indicated in Fig. 9 include a mandrel having a. layer A of tape material mounted thereon provided with an adhesive outer surface or may include a mandrel and a core mounted on the mandrel and having a layer of adhesive or adhesive carrying material thereon. Throughout these specifications it is to be understood that the term roll or web roll" means a roll having a mandrel or a-mandrel and a core. With the stock secured to the roll R1 the frame RF is rotated to the position shown in Fig. 2 and the roll R1 is rotated to wind up the material on said roll, the web or stock then being guided from the roll G over one of the guide rolls GR. When the desired amount of material has been wound up on the roll R1, the cutting mechanism CM indicated in Figs. 3 and 4 is brought into operation to make a diagonal cut across the web as indicated at DC in Fig. 8. In the position shown in Fig. 3, the roll R2 is now in a position to receive the web and a portion of its surface has an adhesive coating adjacent one side to receive a part of the cut (or pointed end) of the web, as for example, that represented between the inner side and the line AC in Fig. 8, and just before the cutting operation and as shown in Fig. 3, the pressure roll PR is brought down, through the swinging of the frame SF, close to the web while the roll R1 continues to pull the stock forwardly. Directly thereafter as the cutting mechanism CM is operated to make the diagonalcut end DC (Fig. 8), the roll PR is brought down into pressing engagement with this end of the web as shown in Fig. 4 while the cut end of the rolled-up web is carried away from the roll R2, the roll R2 being rotated to start the wind-up of this second roll. Thereafter, the frame RF is rotated as shown in Fig. 5 to bring the first wound roll of stock on the roll R1 down to position near the floor where it may be readily removed and which position may be determined by a limit switch LS as the roll R2 continues to be rotated to wind up the web material thereon.

As soon as the first wound roll of stock is removed from the frame and from its supporting roll R1, either this roll or a similar roll is replaced in the frame RF which is then rotated in a counter-clockwise direction to the position shown in Fig. 6 so that the roll R2 now ocoupies the position shown for the roll R1 in Fig.2 and the roll RX is now' in position to receive the stock for a third roll. The roll R2 is continuously rotated to build up the second roll of stock thereon, and when the con- I ditions shown in Fig. 3 have been reached, another diagonal cut is made across the web similar to that described in Fig. 4 except the position of the cutting means is reversed so that the tip end of the on coming web is on the opposite side from that shown in Fig. 8, and this newly cut end is then adhesively attached to the roll u of Fig. 6 when the stock on roll R2 has been built up to the desired amount so that roll RX now takes on stock for a third roll as the cycle is repeated, it being noted that once the stock is connected to one of the rolls as shown in Fig. l, the movement of the stock continues regardless of its transfer from one roll to another.

It is to be noted that the hydraulic motors and pumps and their control valves, the air motors and their control valves, the relays, switches, and solenoids forming the electrical controls are of known construction and available on the open market and that no claim is here made to invention in these parts per se but only in combination with the apparatus as hereinafter described and that in connection with this apparatus some of the piping and some of these controls have not been shown on the apparatus for the sake of clearness and brevity but have been shown in the diagrammatic views hereinafter referred to.

Referring now to Figs. 7, 9, 12, and 16 to 18, where a tensioned out feed supply means for the stock has not been provided, then the web to be rewound is carried into the 'bight of a pair of feed rolls 2 and 3 rotatably mounted on the frame of the machine, the roll 3 of which may be driven in any suitable manner as by a motor 4 connected by reduction gearing 5, 6, 7, and 8 to the shaft 3a for the roll 3, and provision may be made for stopping the drive of this roll when further stock is not desired. The roll 2 as indicated in Fig. 12 is a rubber covered roll which may be brought into varying pressure contacts with the web by mounting its shaft 2a on a pair of spaced swinging arms 9 (one being shown) pivoted at 10 and each of which is adapted to be engaged by the Piston 11 of an air motor cylinder 12 suitably supplied with compressed air under the control of the operator. From the feed roll 2 the web passes over a dancer or tensioning roll DR 'so'that beyond thi'sroll the web becomes the tensioned web TW passing over the guide roll G.

For regulating the position of the roll DR, its shaft ends EE are journalled in boxes 13 adjustably mounted on spaced piston rods 14, each end carrying a rotatable gear 15 meshing with a fixed positioned rack 16 so that as the rods 14 are moved up and down, the gears 15 are turned as they travel'on the rack 16. Affixed to one of the gears 15 is a'sprocket 17 that meshes with an endless chain 18 that is trained between sprockets 19 mounted on shafts 20suitably journalled in the frame of the machine so that as the sprocket 17 is turned, the chain 18 is driven torevolvethe sprockets 19. The shaft 20 for the lower sprocketcarriesa'gear 21 that meshes with a gear 22 on a shaft 23 carrying'acarn 24. The cam 24 is engagedjby a rollered tappet rod 25 suitably guided adjacent the frame of the machine and operatively connected to one arm of a lever 26 'pivotally mounted at 27 on the frame of the machine and operatively connected at its other end to a pressure reducing valve 28 of known construction and controlling the pressure of the hydraulic pump or pumps hereinafter described. Air motor cylinders 29, oneon each side of the machine, have the pistons 30 for the rods 14 working therein, the pressure air being introduced into the lower end of each cylinder from a supply pipe 31 and theupper end of each cylinder having a vent connection 32. The upper end of each rod 14 has an extension 14a associated with a hydraulic dash pot 33 which includes a piston (not shown) by which hydraulic fluid is transferred from one side of this piston to the other through 'a run around pipe connection 34. The cylinders 29 are supplied with air under a predetermined substantially constant pressure which as hereinafter described is raised and lowered.

In case of breakage of the web a limit switch (Fig. 12) 35 has its actuator 36 in the path of movement of an arm 37 on one of the boxes 13 so that as the dancer roll reaches the limit of its upward travel, the switch 35 is actuated to stop themachine as hereinafter described.

Referring to Fig. 20, a compressed air supply pipe 38 with its filter F, lubricator L, and pressure regulator valve 39 with its associated gauge 3911 has a branch connection 40 provided with a high pressure regulating valve 41 with its associated gauge 41a leading to a three way spring returned manually controlled air-operated valve 42 connected to the pipe 31 to supply air to the cylinders 29. A solenoid operated air valve 43 in the pipe 31 allows air'to flow to cylinders 29 only while the pumps hereinaf ter described are operating. A low pressure air sup ply pipe 44 provided with a pressure regulator valve 45 and its associated gauge 45a also leads to the valve 42 to supply low pressure air to the pipe 31 when the valve 42 is shifted to its other position as hereinafter described.

The gauges 41a and 45a advise the operator of the tensioning pressure applied to the dancer roll DR.

A branch pipe 40a leads to a four wayrpre-set control, manually operated, air pressure returned valve 46, from i which leads a pipe 40b through a solenoid operated roll being wound up passes to this roll, the operator actuates the valve 48 to admit air from pipes 38, 40a, 40b to pipe 44 which through a branch pipe 44a operates an air cylinder 44b to shift valve 42 to connect pipe 44 past the manually controlled reduced pressure regulator 45 to pipe 31 and cylinders 29 to reduce the operating pressure on the dancer roll. The solenoid operated valve 47 prevents the passage of operating air to the valve 48 until one of the rolls R1 or R2 is in the position shown in Figs. 3, 4 or 7, at which time one or the other of two 1 pins 49 (see Fig. 10) on the shaft S can trip the actuator of a limit switch 4911 (Fig. 21) that controls the solenoid 49b and the lighting of the light PL, said switch and the coil of the solenoid being in'a conductor 490 connected across the supply lines 89 and 90 and the light PL being in the branch conductor 49d. The switch 49a acts to locate the empty roll in position for change-over.

It is to be noted that the knob shown in connection with some of the valves shown in Figs. 19 and 20 has been used as a symbol for manual control, and that the eccentric member shown in these figures has been used as a symbol for a cam control of certain of the valves.

The web TW after passing over the idler guide roll G passes through a cutter section before attachment to one of the web rolls R1 or R2. The web cutting means includes a traversing carriage, a rotary cutter mounted on said carriage and adapted to be shifted to different angular positions relative thereto to make a diagonal or bias cut across the tensioned web.

Referring to Figs. 13 to 15, a pair of parallel feed screws 50 and 51 are journalled in spaced relation in the sides of the frame of the machine, and each carries a gear 5x meshing with a common drive gear 5y whose shaft is driven at a predetermined constant speed by a reversible hydraulic drive motor 54 whose starting operation is under the control of the operator. Referring to Fig. 19, the motor is operated by pressure fluid delivered by a variable volume rotary hydraulic pump 55 drivenby an electric motor 56, said pump having an output fluid pressure pipe 57 leading to an air-operated two way reversing valve 58 that controls the operating fluid flow to either a pipe 55a or a pipe 55b and a return pipe 57a leading to a pump sump in the supply tank ST and including an adjustable throttle valve 57b. The pipe 55a has branches 55c and 55d connected to a common pipe 55e that leads to one side of the motor 54; The branch 550 has a'cam' operated valve 551 to allow free flow of pressure fluid therethrough or to restrict and thenshut off this flow to the pipe 552. The branch 55d contains a check valve 55g to permit the flow of operating fluid to the pipe 55e in the driving direction to the motor 54 and to cut off the return flow to pipe 55a in the reverse direction. The pipe 55b has branches 55h and 55 connected to a common pipe 55k that leads to the other side of the motor 54. The pipe 55h has a cam opera'ted valve 55L similar to valve 55f and the pipe 55 has a check valve 55m similar to the valve 55g and for similar purposes. Each of the valves 55 and SSL are two way spring returned valves.

The reversing valve 58 determines which of the pipes 5511 or 5512 shall be the input liquid pressure pipe for the pump 54 from the pipe 57 and which of these pipes will be connected with the return 57a. .The valve 58 acting in conjunction with the cam operated valves 55 or 55h controls the starting and stopping of the motor 54, the starting being under manual control and the stopping being under automatic control as hereinafter described.

Referring to Figs. 13 to 15, a pair of cylindrical roller cutters 59 and 60, each having a bevelled edge knife K and a cooperative groove KG for the knife of the other cutter, are journalled in each instance in the forked arms 61 of a vertically disposed spindle shaft 62. The faces of the roller portions KF of the cutters 59 and 60 are of compressible frictional material such as rubber to provide a good contact between these rolls and the webs so that the knives will be rotated during the cut. As the mounting of the spindle for each cutter 59 or 60 in its carriage and carriages 59a or 60a are identical, that for the cutter 59 has been shown in Figs. 14 and 15 and will i be described. The shaft 62 for the cutter 59 is vertically pivotally mounted in the carriage 59a which has a feed nut portion 63 in which the feed screw 50 works and a square grooved portion 64 in which a transversely disposed square guide bar 65 secured to the frame works.

The upper end of the shaft 62 is clamped to one end of a spindle shift lever 66 which forms part of a toggle linkage, the other link of which is formed by a rod member 67 pivotally connected at one end at 68 to the lever 66 and slidably telescopically connected with another rod member 69 that is pivotally connected at one end to a pin 70on the carriage, a spring 71 being interposed between these rod members and acting through this link to hold the lever 66 in a position to which it may be vshifted by one or the other of eccentrically adjustable stops 72 adjacent opposite ends of the bar 65. The lever has oppositely disposed stop engaging projections 73, one of which may engage a stop 74 on the carriage and the other of which engages a stop 74a on the carriage when said lever 66 has been shifted past center by one ofthe stops 72, the spring carrying link 67, 69, and 71 then acting to hold the lever 66 against one of the stops 74 o'r'74a, the lever being shown in Fig. 15 as engaging the stop 74. Thus the swinging of the lever 66 turns the spindle shaft 62' to position the cutter 59 at an acute angle relative to a transverse plane through the web TW. The spindle 62 for the cutter 60 is similarly mounted and similarly positioned at an acute angle relative to the transverse plane through the web by the same kind of toggle linkage above described cooperating with stops 72a similar to the stops 72 on a square guide bar 65a similar to the guide bar 65 and similarly associated with the carriage 60a which also has a nut portion similar to the nut portion 63 in which the feed screw 51 works. Thus as the feed screws 50 and 51 are revolved, the carriages 59a and 60a are moved transversely of the web while the cutters 59 and 60 having been placed in an angled position, by the stops above described, relative to the transverse plane of the web make a diagonal or bias c'utacross the web TW first in one angled direction across one section of the web and then in an oppositely angled direction across the next section of the web. It is to be'noted that the web TW is disposed between the cutters 59 and 60 during cutting and that the cutters turn due to their contact with the moving web.

During the travel of the cutters 59 and 60 diagonally of the web, one of the carriages operates a series of fluid control valves and the other carriage other fluid control ation. As shown, the carriage 59a has a cam projection,

59b adapted to actuate pressure air controlling valves 75, 76, 77, and 78, and the carriage 60a has a'cam projection 60b adapted to actuate hydraulic cutout controlling valves 55 and SSL, all shown in Fig. 19. The valves 75 and 77 are spring returned, three way valves operated near the center of the cutter stroke that control other valves hereinafter described, and the valve 76 is a three way valve operated at about the center of the cutter stroke to control other valves hereinaftermentioned. The valve 78 is a spring returned, four way valve that is disposed adjacent'the back side of the apparatus for operation by the cam 59b as the carriage 59a completes its travel from left to right as viewed in Fig. 13 and controls the air cylinders 79a and 79b of a .four way valve 79 that through air pipes 790 and 79d respectively supplies operating air to air cylinders 58a and. 58bfor the reversing valve 58. The operating air for pipes 790 and 79d is supplied .to the valve 79 by a pipe 79e connected with an extension of pipe 44 which receives air from three way valve 48. The air cylinders 79a and 7% are supplied with air from valve 78 by pipes 78a and 78b. One or the other of the pipes 78a and 78b is connected to a common supply pipe 780 which is the outlet pipe of a spring returned, three way valve 80 operated by an air cylinder 80a which has a throttling orifice 80:: connection with a pipe 80a forming a branch of a pipe 80e also connected to the extension of pipe 44. The inlet air supply pipe 801 for the valve 80 connects with an outlet 80g from the valve 46. 7 With the above construction, as the operator moves first the valve 46 and then the valve 48 to reduce the tension on the dancer roll as above described, some of the air in pipe.44 passes to pipe 79e, valve 79, pipe 79d to air cylinder 58b to shift valve 58 to the position shown in Fig. 19 in which hydraulic fluid from pump 55 is supplied'through pipe 57, valve 58, pipes 55a, 55d past check valve 555 to pipe 552 to the motor 54 to turn the feed screws 50 and 51 to move the carriages 59a and 60a from left to right as viewed in Fig. 13. At this time since the cam 60b has operated to shift the valve 55f to its closed position when the carriage 60 comes to its initial leftward position, the pipe 55c is closed while the cam 60b is in contact with it and then is moved to its open position by its spring 5511 when the carriage 60a moves away from it. At this time the valve 55L has been moved to open position by its spring 55p so that the fluid from the pump 54 is free to return via pipes 55k, 55k, including open valve 55L, pipe 55b, valve 58 to return pipe 57a. At the end of its travel to the right the cam 60b on carriage 60 shifts the valve SSL to first decelerate and then cut off the return flow to the pump to stop the motor 54. Also at the end of the cutter stroke to the right the cam projection 59b has engaged and shifted the valve 78 to its position to shift valve 79 to its other position to in turn shift valve 58 to its reverse position, but at this time the valve 80 is in its off position and air from its cylinder 80a is slowly exhausting through the'orifice 800 to the pipes 80e and 44 to the exhaust port of the valve 48 which with the valve 46 is then in its initial or off position.

When, however, the next cut through the web is to be made and the valves 46 and 48 again'operated, air from pipes 44, 80c, and 80d operates cylinder 80a to shift valve 80 to its open position so that air from pipe'80f (supplied by valve 46) can pass through valve 80 to pipe 780 through the previously carriage-shifted valve 78 to the pipe 78b and air cylinder 79b to shift valve 79 to deliver pressure air from pipes 44, 79e to pipe 79d to operate air cylinder 58b to shift valve 58 to its reverse position so that pressure fluid from pump 55 and pipe 57 now flows to pipe 55b, pipes 55 and 55k to the motor 54 to turn it in the opposite direction and thereby turn spear-ion the feed screws 50 and 51 in the opposite direction to move the carriages 59a and 60a from the right to the left hand side'of the machine as viewed in Fig. 13, the check valve 55m and the cam operated valve 55L functioning the same way as the valves 55g and 55)- previously described. As the carriage 60a nears the end of its leftward movement, it shifts the valve 55f tofirst throttle and then shut off the return flow of fluid from pipe 55a to pipes 55a and 57a so thatthe motor-54 is again stopped,

ready to repeat the cycle of cuts from alternate sides of the web TW. In each instance when the carriages 59a and 60a come to the end of their stroke, thestopscn the bars 65 and 65a act to shift these carriages from one of their angular positions to the other.

Referring to Figs. 7 and 9 to 11, the roll stand RS is formed by spaced uprights RS1 and RS2 carrying journals for the shaft S which is hollow and provided with by draulic liquid passages and air supply passages. The shaft S carries a bull gear 81 meshing with a pinion 82 on a lay shaft 83- rotatably carried by the upright RS2 and carrying a gear 84 meshing with apinion 85 on the output shaft 86 of a geared head reversible electric motor 87 carried by the frame whereby through the reduction gearing above named the shaft S is turned to change the angular position of the frame RF.

Referring to Fig. 21, the motor 87 is in a circuit connected across supply lines 89 and. 9G and including a, conductor 91 having a hand switch HS and a, wound roll operated limit switch LSand is connected to branch conductors 91a, 91b, and 910 that connect with a conductor 91d which has a normally closed switch 91c, the coil of arelay R3 and an overload protector 91f therein. Conductor 91a includes a normally open air pressure operated switch 91g. Conductor 91b has a switch 91h therein operable by one of the pins 49 and which on being shifted bridges contacts 9112 in conductor 91c. Conductor 910 includes a manually operated switch 91/12 and a relay operated switch 91m. A conductor 91j. includes a wound roll operated limit switch 91k and a normally open switch 91l operated by relay R3 and is connected across the conductors 91a and 91b beyond the switch 9111. A conductor 9111 connects conductor 91c tothe line 99 between contacts 911'2. and switch 91/12 and includes a delayecl opening switch 910 and the coilof relay R4 that includes switch 91m. A conductor 91p connects line 89 with conductor 91d beyond the relay R3 and includes amanually operable reverse rotation.

switch 91q, a switch 91r controlled by relay R3 andthe coil ofa relay R5 that controls switch91e.

With the above electric circuit to rotate the turnover frame. RF counter-clockwise, switch HS is closed and switch 91h is closed so that current flows through conductors 91, 91b, and 91d to the motor 87 to start it. This current flow energizes relay R3 to close switch 91l and opens switches910 and 91r. When the frame RF has been rotated to a position in which a full roll has been lowered to the position shown in Fig. 5, the limit switches LS and 91k will be opened to open the circuitto the motor 87, it being noted that switch 91k will stop the motor when thewound roll is slightly above the floor. The switch 91h is a spring-returned switch so that it opens immediately after operation, but since the relay R3' has been energized and switch 9ll closed, current continues to flow from conductor 91 to conductors 91a, 91

around the switch 91h. With the motor 87 on the turnthe operator may close switch 91h2 so that current from conductor 91 can flow through conductor 91c, switches by pressing the jog button switch 91h2, the motor 87 may be started and stopped while the switch 911' is in contact with thecontacts 91i2. Themotor. 87 and hence the turnover frame may necessarily be stopped at any time by the operators opening of the switch HS. To facilitate. the loading of the new core and the initial setup, which. requires adjusting of the limit switches 91i and 49d,.the.

reversible motor 87 may be turned in a clockwise direction by the operator closing switch 91q so that current. flows from conductor 89 to conductor 91p including closed 1 switch91r and coil of relay R5 to the motor through reverse connections (not shown). Energization-of relay R5 opens switch 912 so that the circuit connections between this switch and conductor 91 are ineflective. The reverse rotation of the motor 87 and hence the clockwise rotation of the turnoverfrarne RF is stopped by the operators openingof switch 91q. that the automatic operation of the roll frame controlled switch 49a by the turning of the shaft S as previously explained is of assistance to the operator in bringing a roll R1 or R2 to its proper position to start a new winding operation.

Referring to Figs. 10 and 11, each of the rolls R1 or R2 is a. multi-part structure rotatably mounted in an outer end portion of the arms 92 and 92a that form the roll carrying frame RF. Each roll includes a mandrel 93, here shown as a metaltube though it may be an expanding type mandrel to receive a paper or other suitciprocal piston rod 95b of an air cylinder motor 950 that is carried on the arm 92a, the piston portion of saidmotor having its rod 95b slidably mounted in said arm. to engage with or release said head 95 from the mandrel? 93 which through this clamping action is also clamped to the head 94; The motor cylinders 950 are double acting cylinders having pipes 95d and 95e that each connect through a reversing valve 95g mounted on the arm 92a with a supply pipe 95h including a part of rotary air distributor 95f, between the shaft S and a part of pipe 9511 in the arm 92a, indicated in Fig. 10. The pipes.

95d and 95s are shown in Fig. 19 in each instance leading to a manually operable reversing valve 95g that connects with the common air supply pipe 95h that is sup plied by a branch pipe 400 of pipe 38, this branchincluding check valve 95i and a pressure regulator valve 95 The reversing valves 95g are mounted on the arm 92a and one of the rotary air connections 95) that have not been indicated in detail in Fig. 19 form parts of the pipe 95h while the other of said rotary air connections connects with air supply pipe 101. Operation of either of the valves 95g by the operator will either release or clamp the chuck head 95 to its roll core or mandrel 93. Each shaft 94a carries a gear 94b meshing with a pinion 96 on a lay shaft 96a journalled in the arm 92 and carrying a gear 96b meshing with a gear 960 on a drive shaft 96d of a rotary hydraulic motor 97. The oil or liquid supply for each of these motors comes from a supply pipe 97:: having a rotary connection 97ab leading into the hollow at one end of shaft S that connects by branch pipes 97b to the motors 97. The return flow of fluid from each,

motor includes a pipe 970 that connects with an air operated change over switching valve 98 mounted on the arm 92 and from which leads a return pipe including a pipe: 98c that leads into the hollow of the shaft S (that is blocked off from the inlet as indicated in Fig. 10) and a pipe 98d having a rotary connection 98x with the shaft S and connected with return pipe 57a, this return piping being indicatedon Fig 19 as one pipe designated 98r.

The air motors 98a and 98; for the valve 98 are respec- It is also to be noted.

tively connected by pipes 98g and 98k to a four way change over spring returned selector valve 99 mounted on the turnover shaft S adjacent the arm'92a and mechanically operated by a cam 99a on the roll stand RS1 as the turnover RF reaches the position shown in Fig. 3. This valve receives operating air from a pipe 100 that connects .with branch pipes 101 and 102. Branch pipe 100 is a part of the rotary air distributor 95 Branch pipe 101 con .nects with a supply pipe 101a which may connect through valve 76 with a pipe 101b that connects through pipe 80:: .with pipe 44 so that it is dependent upon the operation .of valve 48. Valves 46 and 48 we have seen are manually operable, but they are also respectively returned to their initial positions by air cylinders 46a and 48a which connect with a supply pipe 103 that includes the air pressure cylinder 91x for the switch 91g. Air flow to pipe 103 is controlled by a pilot actuated air delayed acting timer valve 104 which receives operating air from a pipe 104;: connected with supply pipe 40c and which acts to supply air to the pipe 103 to return the valves 46 and 48 to their ,initial position after actuation by the operator. This valve 104 is spring returned and is operated to return valves 46 and 48 by the delayed action actuator 105 supplied with air from a pipe 106, provided with a check valve 106a and a pressure regulator 106b, connected with a spring returned three way valve 107 that is operated by a cam SP1 on one of the arms SF of the contact or pressure roll PR to establish flow of operating air from the pipes 80c and 44 when the valve 48 has been operated.

The pipe 102 has branches 102a and 1021: respectively connecting with air cylinders 102s and 102d that act to return manually operated three way valves 108 and 109 .mounted on one of the arms of frame RF to their initial positions. The valves 108 and 109 are duplicates, and two are used so that one of them will be readily accessible to the operator when operation is required. Valves 108 .and 109 control air supply from pipe 40c to a pipe 40d to supply operating air to the operating cylinder 40:: of a spring returned directional hydraulic control valve 110. The valve 108 receives air from pipe 400 and delivers it direct to pipe 4011. The valve 109 receives air from a branch pipe 40) connected with pipe 40c and; delivers this air through a pipe 40g to the pipe 40d. A valve 110 controls the flow of pressure fluid through a branch pipe 98g of pipe 97a to a pipe 98i that connects in one position of the valve 110 with the valve 98 and in another position of the valve 110 with a return pipe 110a leading to the return pipe 98; and containing a pressure regulator valve 11%. This valve 110 functions to bring the empty roll up to web speed before cutting the web TW, and the adjustment of valve 110b by the operator determines the speed of the motors 9'7 and hence the speed of rotation of the rolls R1 or R2.

The hydraulic pressure supply pipe 97a for the roll operating motors 97 connects with branch pipes 52a and 53a at the output sides of the pumps 52 and 53 which are also driven by the main drive electric motor 56.

One or the other of the motors 97 is always operating while at times the other motor will also be operating when .a new roll of material is to be rewound. With the above construction and assuming that the motor 56 is operating to drive the pumps 52 and 53 and referring to Figs. 2 and 19, the motor 97 for roll R1 (at right hand side of Fig. 19) is operating to wind up the oncoming web and the valves 98 and 110 are in the position shown in Fig. 19, motive fluid passes from pipe 97:: and right hand pipe 97b to right hand motor 97 and right hand pipe 97c through valve 98 to return through pipes 98r and 5711 while other solenoid 49b to its on position and valve 99 has been shifted by the cam 99a to its other position, but until valves 46 and 48 have been operated by the operator, valve 99 cannot receive operating air. When on the operation of the valve 46 by the operator to make the cut as previously described the valve 99 in its shifted position does not receive operating air until the valve 76 has been shifted at about the center of the cut. Then the valve 99 conducts air from pipe 101 to pipe 98h and air pilot cylinder 98 to shift the valve 98 to the left to connect the left hand motor 97 in driving relation with the pipe 97a while air is exhausting from cylinder 98e, but this action can occur only when the solenoid operated valve 47 is on. Thus valves 46, 47, 48, and 76 have to be operated before valve 99 becomes effective to shift valve 98 to a position where the motor 97 for roll R1 is shut off and a driving circuit to the motor 97 for roll R2 is established. To bring the roll frame RF to the position shown in Fig. 2 where the valve 47 becomes operable, it may be necessary for the operator to operate the jog button 91h2 to bring the limit switch 491: into closed position.

Before the right hand motor 97 has fully wound up its web and when the frame RF is in the new roll II'C- ceiving position shown in Fig. 2, the operator actuates either the valve 108 or 109 to energize air cylinder 40a to shift valve 110 to the left While the valve 98 is still in the position in which the roll is being driven by its motor 97. When under these conditions valve 110 is shifted so the connection of pipe 98g with pipe- 981'- is cut off and a connection between pipe 98i and pipe 110 is made, the operating fluid for the left hand pump-97 for roll R2 passes via pipe 97a,'left hand pipe 97b, the pump 97, left hand pipe 970 to the valve 98 to therevturn pipe 98r. When the valve 108 or 109 is shifted, it-stays in this position until the air passes through pipe 101. At the time this new roll, roll R2, is being speeded up as above described by the operation of valve 108 or 109 and the valve 110, the valve 48 has not been operated. Then when the operator through his operation of valves 46 and 48 starts the operation of the cutting mechanism as previously described and the pressure roll PR is brought into contact with the Web as hereinafter described, the cam 59b of the carriage 59a operates the valve 76 and the pressure roll PR is operating, the air is admitted to valve 99 as above described to shift valve 98 and through the pipe 102 and branch pipes 102a or 10% and air cylinders 102c or 102d return the valve 108 or 109 and in doing so open the air cylinder 40a of valve 110 to exhaust through the valve 108 or 109 and allow the valve 110 to return to stop the motor 97 for roll R1 while the motor for roll R2 continues to rotate to wind up the oncoming web material on this roll.

As the web now winds on this roll R2, it pushes the pressure roll upwardly so that .the cam SP1 on one of the arms SF moves out of contact with the valve 107 which then allows operating air from pipe 80s to pass to pipe 106 and air pilot cylinder 105 to shift valve 104 to its other position in which pipe 104a connects with pipe 103 and air then acts through pressure cylinder 91x to shift switch 91g to its closed position. Air from pipe 103 also passes to pilot cylinders 46a and 48ato return valves 46 and 48 to their initial positions allowing venting of air through pipes 44 and :2. The closing of switch 91g allows current from line 89 to pass through then closed switches HS and LS in conductor 91 to con ductor 91a including switch 91g to conductor 91d including then closed switch 91c, coil of relay R3, overload 91 the motor 87 to the return line 90. Operation 'of the motor 87 swings the turnover fram'eRF counterclockwise away from roll PR toward: the position shown in Fig. 5. While the pipe 80e.thr ou gh the valve 107 is then connected with pipe 106 to the air cylinder 105 since due to valves 106a and 10Gb the release of air from this cylinder 105 is delayed, the valve limit 911' has returned to its normal position in contact with parts of conductor'91b, and therefore, current from line 39 continues to flow via conductor 91, conductors 91a and 91j (switches 91k and 91j being closed) to conductor 91d to the motor'87 even though switch 91g has opened until the current to said motor is shut off when, as shown in Fig. 5, the filled rollRl has operated the limit switch 91k and then the limit switch LS.

At this position of the turnover frame RF and while the roll R2 is being wound, the valve 95g for the chuck motor 950 for the roll R1 is operated by the operator to withdraw the chuckinghead 95 for this roll so that the tube 93 forming part of this roll R1 can be removed from the frame RF and a new tube for new roll RX inserted in head 94 and clamped in position by the reverse operation of the valve 95g, after which the operator through his actuation of the switches heretofore described controlling motor 87 again starts this motor to bring the turnover frame RF to its position shown in Fig. 6 as determined by the limit switches heretofore described which is the same position as that shown in Fig. l, and the cycle of operations is repeated.

Referring to Fig. 21, the motor 56 is connected across the lines by a conductor 35a that includes a manually operable stop switch 35b, a manually operable start switch 35c, the coil of a relay R6, an overload protective device 35d, and the motor. A branch conductor 35e "connects with conductor 35a between the switches 35b and 35c and with the line 90 and includes a switch 35 controlled by relay R6, the limit switch 35 previously mentioned, and the coil of solenoid 43a that actuates the valve 43 previously mentioned. There is also a branch connector 35g that connects with conductor 35a between switch 35c and relay R6 and with conductor 35a between switch 35 and the coil of solenoid 43a, With this arrangement, on closing of switch 350 by the operator current flows from the line 89 through conductor 35a energizing relay R6 and starting the motor 56. Energization of relay R6 closes switch 35 so that current can pass through conductor 35c, switches 35 and 35 and coil of solenoid 43a and also through branch connector 35g to conductor 35a, relay R6, and the motor 56 when part of the circuit through conductor 35a is broken by the operators release of the switch 350. The motor 56 then continues to operate to drive the pumps 52, 53, and 55 until the operator breaks the circuit by the opening of switch 35b. Should the dancer roll DR due to breakage of the web material move to its upper position, it opens switch 35 so that current then passing through conductor 35g is cut off and the motor 56 stops.

Passage of operating fluid through pipe 97a is controlled by a spring returned two way hydraulically operated valve 110a that is used to prevent a sudden surge to the motors 97 when starting pumps, and its running position is controlled by a hydraulic actuator cylinder 110d supplied from the pipe 97a above the valve by a pipe 97] including an adjustable throttle valve 97g. A branch pipe 97h connected below the valve 110:: connects through an adjustable throttle valve 971' to the pipe 97a above the valve. Each of the pumps 52 and 53 are of known construction of the variable volume pressure compensated type, each having a remote hydraulically controlled governor 111 to control pump delivery pressure, these governors being connected in series with an oil pressure pipe 112 connected with a pressure relief valve 113 discharging to the return 57a and with a branch 114 that leads to the output side of the pressure reducing valve 28 whose spring loaded valve member 28a is controlled as previously described by the dancer roll DR through gearing operated cam 24 so that the dancer roll controls the pumps 52 and 53 through the governors 111.

While the reducing valve 28 is of known construction, because of its operation by a cam, it has been shown in section in Fig..16 and includes a cam actuated rod 28a slidably -mounted.in itsmhousingx-and engaging with one end of a pressure regulating spring 28b, whose other end engages a throttling valve 28c that is slidably mounted in a bore 28d in the housing which has an inlet chamber 28c and an outlet chamber 28;, thevalve 280 having a reduced diameter portion 28g to allow more or less operating fluid .to pass from chamber 282 to chamber 28]. The lower end of the valve 280 is bored out to provide a chamber 28 slidably sealed at its outer end by a plug 28h and provided with a restricted port 28i connecting chambers 28 and 28]. With this construction, operating fluid passing to chamber 28c can flow from inlet chamber 28c and the passage formed by the reduced diameter portion 28g to the outlet chamber 28 but some of this fluid also flows through port 28i into chamber 28g and acts against the loading pressure of the spring 28b to shift the valve 38c to. a throttling position to tend to cut off the inlet chamber 282 from the outlet chamber 28] so that the greater the loading of the spring 28b by the cam, the greater will be the pressure delivered to the pump governor which, of course, in turn determines the pump pressure.

Once the pressure on the dancer roll has been set for any particular web, that setting remains the same. However, the dancer roll controls the position of the cam 24- which, in turn, determines the pressure delivered to the fluid motors 97. As the diameter of the roll increases, the tension in the web decreases. This decrease causes the dancer roll to move up, thus changing the position of the cam 24 which, in turn, shifts tappet rod 25 to increase the pressure output of the pump by means of the reducing valve 28, as above described.

Thus, an increase in the diameter of the roll being built up requires an increase in pressure to the fluid motor be cause of the longer moment arm being developed and in order to main constant tension on the web. In other words, this governing mechanism acts to increase the pressure output of the pumps 52 and 53 as the web roll builds up so that the speed of the web being wound on the roll R1 or R2 will be substantially the same from the start to the finish of the winding operation. It is noted that while the r.p.m. of the motors decreases as the web builds up, more power is required to drive these motors to keep the speed of the web being wound up substantially constant, and the increased output of the pumps 52 and 53 as determined by the governors 111 accomplishes this resu t.

The pumps 52 and 53, for example, may be vane type pumps in which the vanes on the driven rotor work in a housing including a peripheral ring portion that is shiftable eccentrically relative to the rotor, the governor acting to shift this ring to its full output position.

The valve 28 may also be cut off by a valve 115 in the pipe 114 moved to cut oil position by a single acting air cylinder 115a that receives operating air through a pipe 116 that receives air from a three way valve 117 that receives its operating air from a branch 40:: of pipe 40 when the air cylinder 11711 is energized. The pipe 97h delivers fluid from the output side of the pumps 52 and 53 which after passing the reducing valve 28 flows through pipes 114 and 112 to the governor valves 111. The position of valve 117 is determined by air cylinders 117a and 117b, Cylinder 117a receives its operating air from pipe 101 and cylinder 117b receives its operating air from a pipe 118 that is a branch of a pipe 119 that is a branch of pipe 801 controlled by the valve 46.

The various valves, pumps, and motors and their controls that have been described in connection with the operation of the rolls R1 and R2 are under the control of the operator trough his operation of the valves 46 and 48 and the manual controls .of certain of the valves that have been mentioned. In each case when the roll frame RF has been brought to a position in which one end is lowered, a mandrel 93 which has previously been treated to receive an adhesive, either atits left hand end or at its right hand end depending upon which way the cut of the webhasrbeen. made, is chucked into ithe framezby. the

operators operation of the air motor c mounted there Lin on and operating one of the chucking heads 95. Thereafter, when the controls are operated as previously to bring this chucked roll up to speed and the knives have been operated under the control of the operators operation of the valves 46 and 48 to make the cut, the cut end of the web which has been carried along with the other part of the'web that has been wound up on the other roll is, broughtinto contact with the adhesive face of the new poll by the actionof the roll RP as hereinafter described and which may be designated as a contact roll mounted on a swinging frame SF.

1 Referring to Figs. 7 and 12, the frame SF is given two downward swinging movements. The first downward swinging movement is provided by piston rods 120 on opposite sides of the machine connected at their outer ends to the swinging frame members SF and each operating in a double acting air cylinder 121 which is pivoted at its rear end 122 on an eccentric oscillatory shaft 123 so'that each piston and its cylinder forms an extensible link which on the application of pressure to the rear end of the pistons swings the frame SF down to bring the contact roll PR to a position within a short distance of the web TW then passing between it and the new roll. Thereafter, as the cutting mechanism operates to make a diagonal cut across the web as the tip end of this out comes under the roll PR, another double acting air cylinder 124 is operated to move its piston rod 125 up wardly to swing a crank arm 126 attached to the eccentric shaft 123 to turn this shaft so as to further extend the extensible piston operated links 120 so as to further swing the arms of the frame SF down to bring the contact roll PR into pressing engagement with the cut end of the oncoming web so as to press this cut end between it and the adhesive coated portion of" one-of the feed rolls which may be the 'roll R1, and this action is timed to continue untilthe web has been firmly secured to the roll R1 so that as the roll R1 which is now up to speed rotates, a new winding of the web material is started on this roll. As the contact roll PR reaches the end of its downward movement, the cam SP1 on one of the arms SF shifts the valve 107 to its cut off position so that valve 104 cannot be operated;

Referring to Fig. 20, the air cylinders 120 receive air at their lower'ends through a pipe 127' that connects with the pipe 40b that is controlled by the valve 46. ,These same cylindersreceive air at their upper ends to raise the contact roll PR through a connection 119a with the pipe 119 which it has been noted is connected with the pipe 80f that is also controlled by the valve 46. The air cylinder 124 connects at its lower end through a pipe 128 that connects with a three way valve 129 that receives operating air from a pipe 130 connected with the pipe 44, and'this valve 129 is operated in one direction by an air cylinder 131 connected by a pipe 132' with a pipe 133 supplying the upper end of the air cylinders '124, which pipe connects with the pipe80f controlled by the valve 46, and it is operated in the opposite direction by an air cylinder '134 supplied with air from a pipe 135 that gets its air either through the valve ,75 or the valve 77. The lower end of the cylinder 124 is supplied with air from the-pipe 130 through the valve 129 by a pipe 136.

The cutter carriage tripped valves 75 and 77 receive air from pipe 44 via pipe 80:: and a branch pipe 135a, and each of these valves discharges to the pipe 135 which also has a branch 76a supplying air to a pilot cylinder 76b that shifts valve 76 to its initial position. When the valve .75 is shifted by the cam 59b.on carriage 59a to supplyair through pipe 135a to pipe 135 and the pilot cylinder 134,the valve 129 is shifted to admit air from pipes 130 and 136 to the lower end of cylinder 124 to actuate the piston 125 to swing the/crank 126 andeccentric 123 as previously described to bring the contact roll PR into engagement with the web to press it against the adhesive surface on the rewind roll while the cutting mechanism completes its cut. Th s occurs at the time the knives are moving over the central portion of the web.

and continues until the knives have completed their cut.

At about the center of the cutter stroke the cam 59b' actuates the valve 76 allowing air from pipe 800 to pass via pipe 101b to pipes 101a and 101 to actuate pilot air cylinder 117a to actuate valve 117 to supply air from pipes 38, 40, 40d to a pipe 116 to actuate a cylinder 115a to move shut off valve 115 to its closed position and thus cut off the reducing valve 28 and allow the governorv valves 111 to move to a low pressure position. Thereafter, the cam 59b actuates the valve 77 sending air to the pilot cylinder 76b to move the valve 76 back to its initial position to exhaust the air from lines 101a, 101, and and therefore from the lines 9811 and 98g and.

cylinders 98] and 98e controlling valve 98 and also exhaust air from the pilot cylinder 117a of valve 117 tov allow this cylinder to operate the cylinder a to operate the cut off valve 115.

As the web now attached to its roll builds up or if the jog button switch 91h2 is depressed, the contact rol-l will be raised by the raising of the arms SF so that the valve 107 moves off of its operating cam SF1 and is moved by its spring to establish air flow from the pipe 80c to the pipe 106a and pilot cylinder 105 to shift valve 104 to direct operating air from the pipe 40c, via pipe 101a to pipe 103 and thence to the pilot cylinders 46a and 48a for the valves 46 and 48 respectively. Valve 46 then connects air pipe 40a with pipes 80 and 119 to return the pistons of the main throw contact roll cylinders 121 back to normal and also through the airfrom pipe 80] to the pipe 133 supplies air to the upper end of the cylinder 124 to return the piston 125 and its eccentric. 123 back to its normal position. The shifting of valve 48 to its initial position establishes exhaust flow through it from the pipe 44, and this deenergizes air cylinder 44a for the valve 42 so that the dancer roll DR3 is again operating in its high pressure setting and air to one of the pilot cylinders 79a or 79b is exhausted depending upon the position of the valve 78, it being noted that thisvalve 78 is operated by the cam 59a at the end of the rightward cutting stroke. For the next cut across the web the above cycle is repeated, but in this instance thecam 5% on nearing the center of the web actuates the valve 77 which then acts in the same way as the valve 75 to supply air to the pilot cylinder 134 to shift the valve 129 so as to again move the contact roll PR as previously described into contact with the web. Thereafter, cam 59b again trips valve 76 for the purposes previously described and then trips the valve 75 which then acts in the same way as the valve 77 did in making the previous cut across the web.

While the cutters S9 and 60 are each shown as provided with a cutting knife so that the cut is made from both sides of the web material which is desirable for heavy stock, other cutting means may be employed, for example, there may be instances where a single knife cutter on one of the carriages does the cutting and may or may not cooperate with a groove in the anvil cutter roll on the other carriage to make the cut.

What I claim as my invention is:

1. In a winding machine, the combination of a stand, a turnover frame rotatably mounted on said stand, means for rotating said frame to bring .it to different positions, roll supports mounted in spaced relation on said frame including web rolls, each having an adhesive coated portion, means for individually rotating said roll supports, means for supplying Web material to said roll supports for winding thereon, cutting means, in advance of said frame and including a movable cutter for making a bias cut across the web material while webrnaterial is being wound up on one of the roll supports and the other 'roll support is disposed adjacent said cutting means, said cutting means being located immediately in advance of said other roll support whereby cutting of the web occurs before it reaches said other roll support, and means for this roll support to start the wind up of web material thereon.

2. The winding machine as defined in claim 1, in which the cutting means includes a carriage, and means for moving said carriage back and forth transversely of the web and carrying the movable cutter which is a rotary cutter angularly movable relative to the carriage and disposble under the control of the carriage at alternately biased angles to the web.

3. The winding machine as defined in claim 2, in which the carriage is driven by means including a reversible motor and means controlled by the carriage for reversing the drive of said motor.

4. The winding machine as defined in claim 2, in which the carriage is separately driven by a rotary motor.

5. The winding machine as defined in claim 2, in which the cutter carriage controls the means for exerting pressure upon the cut end of the web material.

6. In a winding machine, the combination of a stand, a turnover frame rotatably mounted on said stand, power driven means for rotating said frame in either direction, control means for said power driven means to control the angular position of said frame, roll supports rotatably mounted in spaced relation on said frame and including removable web rolls having adhesively coated portions, means for supplying web material to said roll supports, means, under the control of the operator and of the roll being wound up, for rotating each of said supports, cutting mechanism controlled by the operator for making a bias cut across the web material while one of said supports is winding up web material thereon and the other of said supports is rotating in a position ready to receive the cut end of the web, said cutting mechanism being located immediately in advance of the other of said sup ports whereby cutting of the web occurs before it reaches the other of said supports, and means for bringing the cut end of the web into contact with the adhesively coated portion of said last named roll support to attach the web material thereto.

7. The winding machine as defined in claim 6, in which the power driven means for rotating the turnover frame includes an electric motor, and an electrical supply circuit for said motor and the control means includes manually operated switches and wound roll operated limit switches in said circuit.

8. The winding machine as defined in claim 6, in which the means for rotating each of said roll supports includes a rotary motor and a source of power for each motor and control means for said power source to supply power to the motor for one of the rolls and as the wind up of web material on said one roll is being completed to supply power to start the rotation of the other roll during the time the cut web material is attached thereto and thereafter through control means operated by said other roll continue the rotation of other roll.

9. The winding machine as defined in claim 8, in which the rotary motors are fluid pressure operated motors and the source of power for each motor is a pump having a power outputfluid pressure operated governor, a pressure reducing valve for controlling said governor, and means controlled by the build up of web material on a roll support tocontrol said pressure reducing'valve.

10. The winding machine as defined in claim 9, in which the means controlled by the build up of web material on a roll support to control said pressure reducing valve is a cam and a web engaging member for operatmg said cam.

11. The winding machine as defined in claim 9, in

which the means controlled by the build up of web material on the roll support to control said pressure reducing valve is a cam and a swinging arm engageable with the web and moved thereby to actuate said cam.

12. The winding machine as defined in claim 6, in which the means for rotating each roll support is a rotary hydraulic motor and a source of pressure liquid for said' motor, and valve means for controlling said pressure liquid to supply the same to one of said motors to rotate one of said roll supports while rendering said pressure liquid ineffective to operate the motor for the other roll support, valve means operable in conjunction with said first named valve means to supply pressure fluid to the other said motors while the first named motor is operating, manually controlled means for controlling said last named valve means, means controlled by said cutting means as it makes its cut across the web to shift said first named valve means to interrupt the drive of said first named motor and its roll support and continue the .drive of the second named motor and its roll support to wind up material on said last named roll support after it has been cut by said cutting mechanism.

13. The winding machine as defined in claim 12, wherein the second named valve means is fluid pressure operated to supply said pressure fluid to the other of said motors and the manually controlled means for controlling this second narned valve means is a source of fluid under pressure and valve means operable by the operator to control said source of pressure fiuid.

14. In a winding machine, the combination of a stand, a turnover frame rotatably mounted on said stand, means for rotating said frame to bring it to difierent positions, roll supports mounted in spaced relation on said frame including web rolls, each having an adhesive coated portion, means for supplying web material to said roll supports for winding thereon, means for individually rotating said roll support, cutting means, in advance of said frame and including a movable cutter for making a bias cut across the web material while web material is being wound up on one of the roll'supports and the other roll support is disposed adjacent said cutting means, said cutting means being located immediately in advance of said other roll support whereby cutting of the web occurs before it reaches said other roll support, and means, con trolled by said cutting means, and including a contact roll, for exerting pressure upon the cut end of the web material as it reaches said last; named roll support to bring it into binding contactwiththe adhesively coated portion of this roll support to start the wind up ofweb material thereon.

15. The winding machine as defined in claim 6, in which the means for supplying Web material to said roll supports includes a dancer roll movable to different positions, and in which the means for rotating each of said roll supports includes a rotary motor and a source of power for each motor and the means controlled by said dancer roll for varying the output of said power source. 1

16. The winding machine as defined in claim 6, in which the means for rotating each of said roll supports includes a fluid rotary motor mounted on said turnover frame and a source of power for each motor, and means, controlled by a web condition during winding, to vary the output of said power source.

References Cited in the file of this patent UNITED STATES PATENTS Bower Nov. 18, 1958 

